| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle diagnosis system capable of transmitting diagnosis data to a diagnosis apparatus while suppressing deterioration in controllability by a plurality of electronic controllers.SOLUTION: A GW-ECU 10a transmits, at predetermined transmission intervals, a plurality of pieces of diagnosis data output from first ECU 21 to n-th ECU 2n connected with a communication line in an on-vehicle network of a vehicle to the communication line, to a first tool 110 or second tool 120 provided outside the vehicle. The GW-ECU 10a comprises: a communication load determination unit 14 for determining whether or not a communication load on the communication line has reached a first reference value; and a transmission interval updating unit 15 which updates the transmission interval to a value longer than the present value of the transmission interval, when the communication load determination unit 14 determines that the communication load has reached the first reference value. |
